A generator structure is provided for generating electrical power. The generator structure includes an enclosure having first and second spaced sidewalls interconnected by first and second end walls so as to define an interior. First and second generator sets are positioned within the interior of th
A generator structure is provided for generating electrical power. The generator structure includes an enclosure having first and second spaced sidewalls interconnected by first and second end walls so as to define an interior. First and second generator sets are positioned within the interior of the enclosure. Each generator set includes an engine, an alternator driven by the engine for generating the electrical power and a radiator operatively connected to the engine. Means are provided for synchronizing the electrical power generated by each alternator.
대표청구항▼
A generator structure is provided for generating electrical power. The generator structure includes an enclosure having first and second spaced sidewalls interconnected by first and second end walls so as to define an interior. First and second generator sets are positioned within the interior of th
A generator structure is provided for generating electrical power. The generator structure includes an enclosure having first and second spaced sidewalls interconnected by first and second end walls so as to define an interior. First and second generator sets are positioned within the interior of the enclosure. Each generator set includes an engine, an alternator driven by the engine for generating the electrical power and a radiator operatively connected to the engine. Means are provided for synchronizing the electrical power generated by each alternator. aim 1, wherein said magnetic flux concentration tips are placed in all said gaps in said axial direction. 3. A magnetic pole position detector for an electric motor according to claim 1 or 2, wherein a number of pairs of stator teeth is 3n (n being an even number greater than or equal to 2), each of six pieces in 3n pieces of said magnetic flux concentration tips is placed in respective one of said gaps in said axial direction between said stator teeth positioned at a reference position and positions 60°, 120°, 180°, 240° and 300° in electrical angle apart from said reference position, so as to make the magnetic reluctance variations between said first tooth protrusion of said detection rotor and said second tooth protrusions of said stator teeth successively occur with a phase difference of an electrical angle of 60° relative to each preceding one. 4. A magnetic pole position detector for an electric motor according to claim 1 or 2, wherein a number of pairs of stator teeth is 2n (n being an even number greater than or equal to 2), each of four pieces in 2n pieces of said magnetic flux concentration tips is placed in respective one of said gaps in said axial direction between said stator teeth positioned at a reference position and positions 90°, 180° and 270° in electrical angle apart from said reference position, so as to make the magnetic reluctance variations between said first tooth protrusion of said detection rotor and said second tooth protrusions of said stator teeth successively occur with a phase difference of an electrical angle of 90° relative to each preceding one. 5. A magnetic pole position detector for an electric motor according to claim 1 or 2, wherein a number of pairs of stator teeth is 5n (n being an even number greater than or equal to 2), each of ten pieces in 5n pieces of said magnetic flux concentration tips is placed in respective one of said gaps in said axial direction between said stator teeth positioned at a reference position and positions 36°, 72°, 108°, 144°, 180°, 216°, 252°, 288° and 324° in electrical angle apart from said reference position, so as to make the magnetic reluctance variations between said first tooth protrusion of said detection rotor and said second tooth protrusions of said stator teeth successively occur with a phase difference of an electrical angle of 36° relative to each preceding one. 6. A magnetic pole position detector for an electric motor according to claim 1, wherein a pair of output voltage waves of said magneto electro transducers placed with an electrical angle of 360° and mechanical angle of 180° apart are averaged. 7. A magnetic pole position detector for an electric motor according to claim 1, wherein said annular yoke portion is composed of a non-magnetic material. 8. A magnetic pole position detector for an electric motor according to claim 1, wherein open holes are formed in said annular yoke portion at the roots of said stator teeth and at the places between the adjacent roots of said stator teeth. 9. A magnetic pole position detector for an electric motor according to claim 1, wherein a pair of output voltage waves of said magneto electro transducers placed with an electrical angle of 180° apart are compared and points of intersection of said output voltage waves are detected. 10. A magnetic pole position detector for an electric motor according to claim 9, wherein a reference amplitude which is an amplitude of said output voltage wave of a magneto electro transducer arbitrary chosen from 2n (n is a positive integer) pieces of said magneto electro transducers composing n pairs of said magneto electro transducers, of which each of said pair of said magneto electro transducers are placed with an electrical angle of 180° apart with each other, is defined, and amplitudes of said output voltage waves of (2n-1) pieces of said magneto electro transducers not chosen are adjusted so as to be equal to said reference amplitude by a regulat or circuit, and said points of intersection of adjusted output voltage waves are detected. 11. A magnetic pole position detector for an electric motor according to claim 10, wherein said regulator circuit comprising an amplifiers for amplifying voltages of said output voltage waves and a variable resistors for adjusting output voltages of said amplifiers. 12. A magnetic pole position detector for an electric motor according to claim 11, wherein said variable resistor comprising a plurality of semi-conductor resistor devices and nonvolatile memory devices, resistance values of said variable resistor are controlled by selecting nodes of said semi-conductor resistor devices by pulse signals, and said resistance values are stored in said nonvolatile memory devices. 13. A magnetic pole position detector for an electric motor according to claim 11, wherein said variable resistor is adjusted so as to make duty factor of output pulses of said magnetic pole position detector 50%. 14. A magnetic pole position detector for an electric motor according to claim 11, wherein said detection rotor is driven in constant rotational speed by said electric motor, said magnetic pole position detector has an automatic regulator circuit for processing output pulses of said magnetic pole position detector to detect duty factors of said output pulses and generating pulse signals corresponding to the difference between said duty factors and a reference duty factor, and said variable resistors are controlled by said pulse signals. 15. A magnetic pole position detector for an electric motor according to claim 1, wherein said stator cores are made of a magnetic material, a printed circuit board is attached to an outer surface of said stator core, each of said magnetic flux concentration tip is composed of a pair of magnetic flux concentration protrusions, and each of said magneto electro transducers is placed between said pair of magnetic flux concentration protrusions with the magnetism sensitive plane of said magneto electro transducer approximately parallel to the surface of said printed circuit board. 16. A magnetic pole position detector for an electric motor according to claim 15, wherein a plurality of guides for guiding said printed circuit board are formed protruding on said outer surface of said stator core. 17. A magnetic pole position detector for an electric motor according to claim 16, wherein lead foils are printed on an surface of said printed circuit board, guide holes of circular arc form opposing said guides and eye holes for ascertaining the positions of said magneto electro transducers are formed in said printed circuit board, and each of said magneto electro transducers is fixed between said pair of magnetic flux concentration protrusions close to the corresponding one of said eye holes with the magnetism sensitive plane of said magneto electro transducer approximately parallel to the surface of said printed circuit board. 18. A magnetic pole position detector for an electric motor according to claim 17, wherein said printed circuit board is placed on said outer surface of said stator core with each of said guides inserted into respective said guide holes of circular arc form, without bringing said magneto electro transducers into contact with said stator teeth, then said printed circuit board is rotated along said guide holes of circular arc form to make each of said magneto electro transducers placed between said pair of magnetic flux concentration protrusions, and then said printed circuit board is fixed. 19. A magnetic pole position detector for an electric motor according to claim 15, wherein soldering points for electronic parts with lead legs and surface mounting electronic parts are concentrated on a surface of said printed circuit board on which lead foils are printed. 20. A magnetic pole position detector for an electric motor according to claim 15, wherein said stator cores are combined in said axial direction with a spacer made of a non-magnetic material between them, then said second tooth protrusions with predetermined dimensions are machined. 21. A magnetic pole position detector for an electric motor comprising a detection rotor, a detection stator, magnetic flux concentration tips and magneto electro transducers, said detection rotor is fixed to a rotatable shaft of said electric motor and comprised of a cylindrical permanent magnet with multiple magnetization on its circumference, said detection stator is comprised of a pair of stator cores, said stator core is comprised of an annular portion and a plurality of stator teeth for collecting magnetic flux flowing through said first tooth protrusions of said detection rotor, said stator teeth are formed at regular intervals on the inner circumference of said annular yoke, each of said stator teeth has inner end portion on which a plurality of second tooth protrusions are formed, said stator cores are assembled concentrically with each other with a gap in said axial direction between them so as to make respective second tooth protrusions of said stator teeth coincide with each other in said axial direction, said magnetic flux concentration tips are placed in said gaps in said axial direction for concentrating magnetic flux in said gaps in said axial direction, said magneto electro transducers are placed in said gaps in said axial direction for transforming said magnetic flux into electrical signals, said detection rotor and said detection stator are assembled so as to make said first tooth protrusions of said detection rotor and said second tooth protrusions of said stator teeth of said detection stator oppose with each other with a gap in the radial direction of said electric motor between them, wherein the magnetic pole position of said electric motor is obtained by detecting the magnetic flux flowing through said stator teeth that varies in accordance the rotation of said detection rotor, said stator cores are made of a magnetic material, a printed circuit board is attached to an outer surface of said stator core, each of said magnetic flux concentration tips is composed of a pair of magnetic flux concentration protrusions, and each of said magneto electro transducers is placed between said pair of magnetic flux concentration protrusions with the magnetism sensitive plane of said magneto electro transducer approximately parallel to the surface of said printed circuit board. 22. A magnetic pole position detector for an electric motor according to claim 21, wherein a plurality of guides for guiding said printed circuit board are formed protruding on said outer surface of said stator core. 23. A magnetic pole position detector for an electric motor according to claim 22, wherein lead foils are printed on an surface of said printed circuit board, guide holes of circular arc form opposing said guides and eye holes for ascertaining the positions of said magneto electro transducers are formed in said printed circuit board, and each of said magneto electro transducers is fixed between said pair of magnetic flux concentration protrusions close to the corresponding one of said eye holes with the magnetism sensitive plane of said magneto electro transducer approximately parallel to the surface of said printed circuit board. 24. A magnetic pole position detector for an electric motor according to claim 23, wherein said printed circuit board is placed on said outer surface of said stator core with each of said guides inserted into respective said guide holes of circular arc form, without bringing said magneto electro transducers into contact with said stator teeth, then said printed circuit board is rotated along said guide holes of circular arc form to make each of said magneto electro transducers placed between said pair of magnetic flux concentration protrusions, and then said printed circuit board is fixed. 25. A magnetic pole position detector for an electric motor according to cla
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이 특허에 인용된 특허 (3)
Anderson Wayne A. ; Fischer Donald R. ; King James L., Enclosed engine generator set.
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